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Saij

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Posts posted by Saij

  1. Hi.

     

    I just bought myself an Ultimaker 3 to replace my Prusa MK3. But I have problems with the print quality.

    As I'm going to print many mechanical parts for RC cars which require tight tolerances I decided to compare those two printers with the Maker's Muse Tolerance Test.

     

    While the test on the Prusa MK3 (which currently has a slightly broken X-Axis motor mount) with stock profiles (0.2mm layer height) results in all except the 0.15 tolerance to get free (some with a bit of force) but the test on the UM3 shows different results.

    First I used the stock profiles that came with Cura 3.6 (0.2 layer height again) and only changed the "Initial Layer Horizontal Expansion" to -0.25 to compensate for an elephant foot. The result was, that only the 0.5 tolerance came free. Even the 0.4 tolerance I couldn't get loose. It only broke by the amount of force I used.

    So I turned down the print speed to 35mm/sec. Now I could get all tolerances except 0.2 and 0.15 free.

     

    What can I do to get such good print results to also get the 0.2 tolerance free? I think it might be that the layer seam is the problem or overshooting at corners.

     

    At the moment my Prusa MK3 is giving me better results than the UM3. I'm a little disappointed in the printer right now. Only positive things for me are the camera, WiFi and the Dual Extrusion.

     

    Greetings

    Saij

     

    P.S.:
    Here is the video from Maker's Muse where he explains the tolerance test

     

    • Thanks 1
  2. Hi.

     

    I'm new to Cura and the UM3 and today I wondered why I can't use the full build plate in Cura.

    I tried to create a 200x200x0.2 square to check the level of my bed and I can't get it to slice.

    Even a 190x190 square I can't fit onto the bed in Cura to get it to slice.

    Is there maybe a setting I'm not aware of that reduces the available bed size in Cura?

     

    Greetings

    Saij

    2018-11-17_09-01_c3891b9575.png

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